The researchers propose a digital-analog quantum computing approach using superconducting circuits to efficiently simulate the Hubbard-Holstein model of fermion-boson interactions with high fidelity, outperforming purely digital methods and offering applications in materials science, chemistry, and high-energy physics.
Researchers at China’s USTC have developed Zuchongzhi-3, a groundbreaking 105-qubit quantum computer that processes calculations 10^15 times faster than the most powerful supercomputers and one million times faster than Google’s latest quantum systems, marking a significant advancement in quantum supremacy.
Quantum Inspire 2.0, Europe’s only freely accessible quantum cloud computer, now features an enhanced user interface, SDK integration, quantum-classical computing functionality, and two upgraded quantum processors—Starmon-7 and Spin2+—with improved qubit fidelity and performance, positioning the Netherlands at the forefront of quantum computing innovation.
This research demonstrates a Contextual Subspace Variational Quantum Eigensolver on superconducting hardware that successfully models N₂ molecular bond-breaking with superior accuracy to single-reference wavefunction techniques, achieved through comprehensive error mitigation strategies and circuit optimization while requiring fewer quantum resources than comparable classical approaches.